Window fan



FIG. 1 shows a front perspective view of a window fan incorporating ourdesign;

FIG. 2 shows a front elevational view of the window fan shown in FIG. 1;

FIG. 3 shows a rear elevational view of the window fan shown in FIG. 1;

FIG. 4 shows a left side elevational view of the window fan shown inFIG. 1, the right elevational view being a mirror image of the left sideelevational view;

FIG. 5 shows a top plan view of the window fan shown in FIG. 1; and,

FIG. 6 shows a bottom plan view of the window fan shown in FIG. 1.

The ornamental design for a window fan, as shown and described.